A dot of light – ADOT abbreviates Audiophile Digital Optical Technology. That translates to fibre-optic upgrade kits from a new company linked to Melco Syncrets of Japan. Their stated aim is to improve the sonics of copper-based Ethernet links. Their kits are placed between residential routers and hifi systems. "The fibre design parameters must match the adapters so the supplied Duplex fibre pairs with the SFP adapters. Connectivity is critical so the terminations are factory-made in clean-room conditions and 1.5m lengths mean that the devices can tuck out of the way. The fibre is less than 3mm in diameter and ideally suited for making the connection even in the largest homes. ADOT can supply standard lengths of optical fibre up to 50m or custom lengths up to 200m." The kits are priced from £349 – £750.